86868493 has 4 divisors (see below), whose sum is σ = 90645408. Its totient is φ = 83091580.

The previous prime is 86868469. The next prime is 86868499. The reversal of 86868493 is 39486868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86868493 - 2²¹ = 84771341 is a prime.

It is a super-2 number, since 2×86868493² = 15092270152182098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86868493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86868499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888423 + ... + 1888468.

It is an arithmetic number, because the mean of its divisors is an integer number (22661352).

Almost surely, 2^86868493 is an apocalyptic number.

It is an amenable number.

86868493 is a deficient number, since it is larger than the sum of its proper divisors (3776915).

86868493 is a wasteful number, since it uses less digits than its factorization.

86868493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776914.

The product of its digits is 1990656, while the sum is 52.

The square root of 86868493 is about 9320.3268719504. The cubic root of 86868493 is about 442.8813875979.

The spelling of 86868493 in words is "eighty-six million, eight hundred sixty-eight thousand, four hundred ninety-three".